US Bridges

990 South Road over C Canal

PoorPosted for load

Jerome County, Idaho · 1.3 S. 2.5 E. Hazelton · Structure no. 000000000024605

Built
1962
63 years old, rebuilt 1979
Condition
Poor
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
110
2023 count
Owner
Local
Other Local Agency

About this bridge

990 South Road over C Canal is a prestressed concrete tee beam carrying 990 South Road over C Canal in Jerome County, Idaho. It was built in 1962 and reconstructed in 1979, so it is 63 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 110 vehicles a day, roughly 22% of them trucks, projected to reach 165 by 2042. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries990 South Road
CrossesC Canal
Location1.3 S. 2.5 E. Hazelton
RouteCounty Highway 0
CountyJerome County
StateIdaho
Coordinates42.57644, -114.08214
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating21.1 US tons
Inventory rating12 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2023)
Projected traffic165 by 2042
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$319,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 990 South Road over C Canal built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1979.

What condition is 990 South Road over C Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does 990 South Road over C Canal carry?

About 110 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is 990 South Road over C Canal?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 22 ft wide.

Who owns 990 South Road over C Canal?

It is owned by the Other Local Agency.